The following things apply to Huawei.
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Weak grid phenomenon: When using remote power supply, both line impedance and transformer output voltage are high. When PV power is fed into the grid, the grid terminal voltage is higher than the output voltage of the transformer. The higher the feed-in power, the higher the terminal voltage rises. When the terminal voltage reaches the threshold value for the overvoltage protection of the inverter, the inverter switches off for protection.
Huawei sets the upper limit of protection voltage for each inverter in strict accordance with national standards.
To better adapt to grid-connected power generation in a weak power grid, the user can also set the protection voltage of the inverter.
To better adapt to grid-connected power generation in a weak power grid, the user can also set the protection voltage of the inverter.